Hi TS00,
thank you so much.. Moving AUX2 from D8 to D12 is no problem - also activating the Voltage monitoring in the code is a piece of cake. Though my skills in electronics are so bad... Could you please draw a sketch (cuircuit diagram) on how to build this potential divider? Thank you so much!

Best regards
careyer

Update: Okay Wikipedia helps a bit here =). I know now how to build this potential divider... I'm just curious why one has to devide the volate to 4,95V and 7,65V .... isn't there a way to do that without dividing .. like with a single resistor or something like that?

A potential divider is the simplest way to provide a 0-5V input to the microcontroller. It's just a couple of resistors. Here's a diagram:

My current PID settings on the attached picture.
Can you give me advice what settings should i tweak to get more stable flight?
(i don't need aerobatics at the moment, i look for beginners pilot stability)

My current PID settings on the attached picture.
Can you give me advice what settings should i tweak to get more stable flight?
(i don't need aerobatics at the moment, i look for beginners pilot stability)